KENT Razor 20 Service Manual
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Summary of Contents for KENT Razor 20
- Page 1 Razor™ 20 / 20T SERVICE MANUAL Kent model: 908 7200 020 908 7201 020 Simple. Clean. 9097065000(2) 2009-06...
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Page 2: Table Of Contents
ENGLISH SERVICE MANUAL TABLE OF CONTENTS GENERAL INFORMATION ............................4 CONVENTIONS ..............................4 MACHINE LIFTING ..............................4 MACHINE TRANSPORTATION ..........................4 OTHER REFERENCE MANUALS ......................... 4 SAFETY ................................. 5 SYMBOLS ................................5 GENERAL INSTRUCTIONS ..........................5 TECHNICAL DATA ..............................7 DIMENSIONS MACHINE ............................ - Page 3 SERVICE MANUAL ENGLISH TABLE OF CONTENTS OTHER SYSTEMS ..............................35 SCREW AND NUT TIGHTENING CHECK ......................35 ELECTRICAL SYSTEM ............................36 MACHINE WORKING HOUR CHECK (with optional hour counter) ..............36 BATTERY CHARGE AND MAINTENANCE (All models) ..................36 BATTERY DISASSEMBLY/ASSEMBLY ....................... 36 BATTERY TYPE SETTING (WET OR GEL) .......................
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Page 4: General Information
The following manuals are available at KENT Literature Service Department: – KENT Razor™ 20 - Razor™ 20T: User Manual - Form Number 9097063000 – KENT Razor™ 20 - Razor™ 20T: Spare Parts List - Form Number 9097064000 – Assembling Instruction Hour meter Kit - Form Number 9096952000 –... -
Page 5: Symbols
SERVICE MANUAL ENGLISH GENERAL INFORMATION SYMBOLS DANGER! It indicates a dangerous situation with risk of death for the operator. WARNING! It indicates a potential risk of injury for people or damage to objects. CAUTION! It indicates a caution related to important or useful functions. Pay careful attention to the paragraphs marked by this symbol. - Page 6 Do not allow to be used as a toy. Close attention is necessary when used near children. – Use only as shown in this Manual. Only Kent recommended accessories must be used. – Take all necessary precautions to prevent hair, jewels and loose clothes from being caught by the machine moving parts.
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Page 7: Technical Data
SERVICE MANUAL ENGLISH GENERAL INFORMATION TECHNICAL DATA Razor™ 20 Razor™ 20T Modello (1 brush/padholder, (1 brush/padholder, without drive system) with drive system) Machine height 41.7 in (1.058,5 mm) Solution tank capacity 11.1 USgal (42 litri) Recovery water tank capacity 11.1 USgal (42 litri) Min/max solution low 0 ÷... -
Page 8: Dimensions Machine
ENGLISH SERVICE MANUAL GENERAL INFORMATION DIMENSIONS RAZOR™ 20 1.228 mm 760 mm DIMENSIONS RAZOR™ 1.228 mm 760 mm 9097065000(2)2009-06 Razor™ 20 / 20T... -
Page 9: Maintenance
SERVICE MANUAL ENGLISH GENERAL INFORMATION MAINTENANCE The lifespan of the machine and its maximum operating safety are ensured by correct and regular maintenance WARNING! Read carefully the instructions in the Safety chapter before performing any maintenance procedure. The following tables provides the scheduled maintenance. The intervals shown may vary according to particular working conditions, which are to be deined by the person in charge of the maintenance. -
Page 10: Machine Nomenclature
ENGLISH SERVICE MANUAL GENERAL INFORMATION MACHINE NOMENCLATURE Throughout this Manual you will ind numbers in brackets – for example: (2). These numbers refer to the components indicated in these two nomenclature pages. Refer to these pages whenever you need to identify a component mentioned in the text.. Forward/reverse gear paddle (*) Control panel Forward/reverse speed adjuster (*) - Page 11 SERVICE MANUAL ENGLISH GENERAL INFORMATION MACHINE NOMENCLATURE (Continues) 26 25 15 27 26 35 P100135 Razor™ 20 / 20T 9097065000(2)2009-06...
- Page 12 ENGLISH SERVICE MANUAL GENERAL INFORMATION MACHINE NOMENCLATURE (Continues) 72 74 73 72 74 73 76 75 79 80 82b 82c 82a 82b 82c 82a RAZOR 20 RAZOR 20T P100136 P100137 P100136 9097065000(2)2009-06 Razor™ 20 / 20T...
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Page 13: Solution/Clean Water Supply System
SERVICE MANUAL ENGLISH SOLUTION SUPPLY SYSTEM SOLUTION SUPPLY SYSTEM SOLUTION TANK AND SUPPLY SYSTEM CLEANING Drive the machine to the appointed solution disposal area. • (For Razor™ 20T) Turn the ignition key (80) to “0”. • (For Razor™ 20) Turn off the switches (71) and (73). Empty the solution tank (20) with the hose (17). -
Page 14: Solenoid Valve Disassembly/Assembly
ENGLISH SERVICE MANUAL SOLUTION SUPPLY SYSTEM SOLENOID VALVE DISASSEMBLY/ASSEMBLY Disassembly Remove the brush. Lower the deck by pressing the pedal (11). Remove the screw (A), disconnect the connector (B) and recover the gasket. Disconnect the union (C) from the solenoid valve (D) and recover the gasket. Remove the screws (E). -
Page 15: Brushing System
SERVICE MANUAL ENGLISH BRUSHING SYSTEM BRUSHING SYSTEM BRUSH/PAD CLEANING CAUTION! It is advisable to wear protective gloves when cleaning the brushes/pads because there may be sharp debris. Remove the brushes/pads, as shown in the User Manual. Clean and wash the brushes/pads with water and detergent. Check that the brush/pads are integral and not excessively worn;... -
Page 16: Brush Motor Electrical Input Check
ENGLISH SERVICE MANUAL BRUSHING SYSTEM BRUSH MOTOR ELECTRICAL INPUT CHECK WARNING! This procedure must be performed by qualiied personnel only. Check If the tank (21) contains recovery water: • Drive the machine to the appointed recovery water disposal area. • (For Razor™... - Page 17 SERVICE MANUAL ENGLISH BRUSHING SYSTEM BRUSH MOTOR CARBON BRUSH CHECK/REPLACEMENT Check If the tank (21) contains recovery water: • Drive the machine to the appointed recovery water disposal area. • (For Razor™ 20T) Turn the ignition key (80) to “0”. •...
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Page 18: Brush Motor Carbon Brush Check/Replacement
ENGLISH SERVICE MANUAL BRUSHING SYSTEM BRUSH MOTOR DISASSEMBLY/ASSEMBLY Disassembly Remove the deck (see the procedure in the relevant paragraph). At the workbench, remove the screw (A) from the deck. Remove the hub assembly (B) with a puller. Remove the screws (C). Remove the reduction unit (D). -
Page 19: Brush Enabling Mivroswitch Adjustment/Replacment (For Razor™ 20T)
SERVICE MANUAL ENGLISH BRUSHING SYSTEM BRUSH ENABLING MICROSWITCH ADJUSTMENT/REPLACEMENT (For Razor™ 20T) Drive the machine on a level loor. Turn the ignition key (80) to “0”. Disconnect the battery connector (12). Remove the screws (A) and move the drive paddle cover (B). Check that the springs (C) operate correctly when releasing the drive paddle (D). -
Page 20: Troubleshooting
ENGLISH SERVICE MANUAL BRUSHING SYSTEM TROUBLESHOOTING ALL BRUSHES DO NOT ROTATE Possible causes The brush enabling microswitch is misadjusted or broken (adjust or replace). The wiring harness between microswitch and function electronic board is damaged (repair). The brush motor electromagnetic switch wiring harness is damaged (repair). The function electronic board is damaged (replace). -
Page 21: Recovery Water System
SERVICE MANUAL ENGLISH RECOVERY WATER SYSTEM RECOVERY WATER SYSTEM RECOVERY WATER TANK AND VACUUM GRID CLEANING, AND COVER GASKET CHECK Drive the machine to the appointed recovery water disposal area. • (For Razor™ 20T) Turn the ignition key (80) to “0”. •... -
Page 22: Squeegee Cleaning/Check/Replacement And Squeegee Blade Replacement
ENGLISH SERVICE MANUAL RECOVERY WATER SYSTEM SQUEEGEE CLEANING/CHECK/REPLACEMENT AND SQUEEGEE BLADE REPLACEMENT CAUTION! It is advisable to wear protective gloves when cleaning the squeegee because there may be sharp debris. Disassembly and cleaning Drive the machine on a level loor. •... -
Page 23: Vacuum System Motor Filter Cleaning
SERVICE MANUAL ENGLISH RECOVERY WATER SYSTEM VACUUM SYSTEM MOTOR FILTER CLEANING Disassembly and cleaning If the tank (21) contains recovery water: • Drive the machine to the appointed recovery water disposal area. • (For Razor™ 20T) Turn the ignition key (80) to “0”. •... -
Page 24: Vacuum System Motor Carbon Brush Check/Replacement
ENGLISH SERVICE MANUAL RECOVERY WATER SYSTEM VACUUM SYSTEM MOTOR CARBON BRUSH CHECK/REPLACEMENT Remove the vacuum system motor (see the procedure in the relevant paragraph). At the workbench, remove the cover (A) (press-itted) from the vacuum system motor (B). Remove the screws (C). Disconnect the electrical connections (D). -
Page 25: Vacuum System Motor Disassembly/Assembly
SERVICE MANUAL ENGLISH RECOVERY WATER SYSTEM VACUUM SYSTEM MOTOR DISASSEMBLY/ASSEMBLY Disassembly If the tank (21) contains recovery water: • Drive the machine to the appointed recovery water disposal area. • (For Razor™ 20T) Turn the ignition key (80) to “0”. •... -
Page 26: Squeegee Spring Check/Replacement
ENGLISH SERVICE MANUAL RECOVERY WATER SYSTEM SQUEEGEE SPRING CHECK/REPLACEMENT (All models, with aluminium squeegee) Check Drive the machine on a level loor. • (For Razor™ 20T) Turn the ignition key (80) to “0”. • (For Razor™ 20) Turn off the switches (71) and (73). Check that the springs (A) and (B) push the squeegee (C) on the loor correctly. -
Page 27: Troubleshooting
SERVICE MANUAL ENGLISH RECOVERY WATER SYSTEM TROUBLESHOOTING The vacuum system motor does not turn on The wiring harness between the function electronic board and the vacuum system relay is damaged or short-circuited (check and repair). The vacuum system relay is damaged (replace). The wiring harness between relay and motor is damaged (repair). -
Page 28: Drive System
ENGLISH SERVICE MANUAL DRIVE SYSTEM DRIVE SYSTEM TRACTION ENABLING MICROSWITCH ADJUSTMENT/REPLACEMENT (For Razor™ 20T) Drive the machine on a level loor. Turn the ignition key (80) to “0”. Disconnect the battery connector (12). Remove the screws (A) and move the drive paddle cover (B). Check that the springs (C) operate correctly when releasing the drive paddle (D). -
Page 29: Maximum Speed Potentiometer Disassembly/Assembly(For Razor™ 20T)
SERVICE MANUAL ENGLISH DRIVE SYSTEM MAXIMUM SPEED POTENTIOMETER DISASSEMBLY/ASSEMBLY (For Razor™ 20T) Disassembly Disconnect the battery connector (12). Operating inside the hole (A), loosen the threaded dowel and remove the maximum speed adjuster knob (B). Unscrew the potentiometer mounting nut (C). Remove the screws (D) and move the cover (E). -
Page 30: Drive System Motor Electrical Input Check (For Razor™ 20T)
ENGLISH SERVICE MANUAL DRIVE SYSTEM DRIVE SYSTEM MOTOR ELECTRICAL INPUT CHECK (For Razor™ 20T) WARNING! This procedure must be performed by qualiied personnel only and with the help of an assistant. Check that the batteries are completely charged, otherwise charge them as shown in the User Manual. If the tank (21) contains recovery water: •... -
Page 31: Drive System Motor Carbon Brush Check And Replacement (For Razor™ 20T)
SERVICE MANUAL ENGLISH DRIVE SYSTEM DRIVE SYSTEM MOTOR CARBON BRUSH CHECK AND REPLACEMENT (For Razor™ 20T) Drive the machine to the appointed disposal area, and empty the recovery water tank (21) with the hose (16). Place the machine on a hoisting system (if available). Otherwise, drive the machine on a level loor. -
Page 32: Drive System Motor-Differential Disassembly/Assembly (For Razor™ 20T)
ENGLISH SERVICE MANUAL DRIVE SYSTEM DRIVE SYSTEM MOTOR-DIFFERENTIAL DISASSEMBLY/ASSEMBLY (For Razor™ 20T) Disassembly If the tank (21) and/or (20) contains recovery water: • Drive the machine to the appointed disposal area. • Turn the ignition key (80) to “0”. • Empty the recovery water tank (21) with the hose (16). -
Page 33: Troubleshooting (For Razor™ 20T)
SERVICE MANUAL ENGLISH DRIVE SYSTEM TROUBLESHOOTING (For Razor™ 20T) Open circuit Possible causes: There are bulky debris or cords under the machine or around the driving wheels (remove the debris). The motor is damaged (check the motor electrical input). The loor gradient is excessive (do not use the drive system on slopes with a gradient exceeding the speciications). There is a short circuit in the drive system electronic board harness (repair). -
Page 34: Drive System Electronic Board Diagnostic Table (For Razor™ 20T)
ENGLISH SERVICE MANUAL DRIVE SYSTEM TROUBLESHOOTING (For Razor™ 20T) (Continues) DRIVE SYSTEM ELECTRONIC BOARD DIAGNOSTIC TABLE No. of lashes (*) Meaning Action Drive system/brush enabling microswitch Check the microswitch adjustment closed when starting the machine Faulty speed potentiometer Check both speed potentiometers Faulty speed potentiometer Check both speed potentiometers Speed potentiometer off neutral when... -
Page 35: Other Systems
SERVICE MANUAL ENGLISH OTHER SYSTEMS OTHER SYSTEMS SCREW AND NUT TIGHTENING CHECK Drive the machine to the appointed disposal area, and empty the recovery water tank (21) with the hose (16). Place the machine on a hoisting system (if available). Otherwise, drive the machine on a level loor. -
Page 36: Electrical System
ENGLISH SERVICE MANUAL ELECTRICAL SYSTEM ELECTRICAL SYSTEM MACHINE WORKING HOUR CHECK (optional) (For Razor™ 20T) Turn the ignition key (80) to “I”. Press the vacuum system switch (73) and read on the hour counter (79) the total number of working hours (scrubbing/drying) performed by the machine. -
Page 37: Battery Type Setting (Wet Or Gel)
SERVICE MANUAL ENGLISH ELECTRICAL SYSTEM BATTERY TYPE SETTING (WET OR GEL) (For Razor™ 20) Set the electronic board of the machine and of the battery charger according to the type of batteries installed (WET or GEL) as shown below: Machine setting Press the switch (71) or (73) and pay attention to the following in the very irst seconds of machine operation: •... -
Page 38: Fuse Check/Replacement
ENGLISH SERVICE MANUAL ELECTRICAL SYSTEM FUSE CHECK/REPLACEMENT Disconnect the battery connector (12). Move aside the recovery water drain hose (16). Remove the battery charger cable (I) from the cable holder (J). Remove the screws (A) and carefully move aside the panel (B) by disengaging the grommet (K) from its housing on the panel (B). -
Page 39: Brush Motor Electromagnetic Switch Disassembly/Assembly
SERVICE MANUAL ENGLISH ELECTRICAL SYSTEM BRUSH MOTOR ELECTROMAGNETIC SWITCH DISASSEMBLY/ASSEMBLY Disassembly Disconnect the battery connector (12). Move aside the recovery water drain hose (16). Remove the battery charger cable (6) from the cable holder (7). Remove the screws (A) and carefully move aside the panel (B) by disengaging the cable grommet (C) from its housing on the panel (B). -
Page 40: Drive System Electronic Board Disassembly/Assembly (For Razor™ 20T)
ENGLISH SERVICE MANUAL ELECTRICAL SYSTEM DRIVE SYSTEM ELECTRONIC BOARD DISASSEMBLY/ASSEMBLY (For Razor™ 20T) Disassembly Disconnect the battery connector (12). Move aside the recovery water drain hose (16). Remove the battery charger cable (6) from the cable holder (7). Remove the screws (A) and carefully move aside the panel (B) by disengaging the cable grommet (C) from its housing on the panel (B). -
Page 41: Function Electronic Board Disassembly/Assembly
SERVICE MANUAL ENGLISH ELECTRICAL SYSTEM FUNCTION ELECTRONIC BOARD DISASSEMBLY/ASSEMBLY Disassembly Disconnect the battery connector (12). Move aside the recovery water drain hose (16). Remove the battery charger cable (6) from the cable holder (7). Remove the screws (A) and carefully move aside the panel (B) by disengaging the cable grommet (C) from its housing on the panel (B). -
Page 42: Troubleshooting
ENGLISH SERVICE MANUAL ELECTRICAL SYSTEM TROUBLESHOOTING See the previous chapters related to the use of the electrical system. Other possible causes: The batteries are discharged or the connections are not eficient (charge the batteries or clean the connections). The batteries are broken (check the battery no-load voltage).Assembly NOTE A fault in the battery charger and relevant connections can affect the machine operation. -
Page 43: Component Layout (For Razor™ 20)
SERVICE MANUAL ENGLISH ELECTRICAL SYSTEM COMPONENT LAYOUT - Razor™ 20 24 V battery Battery connector Battery charger connector Battery charger Deck connector Function electronic board Brush electromagnetic switches Vacuum system relay Water solenoid valve Deck fuse Vacuum system fuse Signal circuit fuse Hour counter (optional) Brush/pad-holder motor Vacuum system motor... -
Page 44: Wiring Diagram (For Razor™ 20)
ENGLISH SERVICE MANUAL ELECTRICAL SYSTEM WIRING DIAGRAM - Razor™ 20 Colour codes 24 V battery Black Battery connector Blue Battery charger connector Brown Battery charger Green Deck connector Grey Function electronic board Orange Brush electromagnetic switches Pink Vacuum system relay Water solenoid valve Violet Deck fuse... -
Page 45: Component Layout (For Razor™ 20T)
SERVICE MANUAL ENGLISH ELECTRICAL SYSTEM COMPONENT LAYOUT - Razor™ 20T 24 V battery Battery connector Battery charger connector Battery charger Function electronic board Drive system electronic board Brush electromagnetic switches Vacuum system relay Water solenoid valve Deck fuse Vacuum system fuse Drive system fuse Signal circuit fuse Brush/pad-holder release fuse... -
Page 46: Wiring Diagram (For Razor™ 20T)
ENGLISH SERVICE MANUAL ELECTRICAL SYSTEM WIRING DIAGRAM - Razor™ 20T Colour codes 24 V battery Black Battery connector Blue Battery charger connector Brown Battery charger Green Function electronic board Grey Drive system electronic board Orange Brush electromagnetic switches Pink Vacuum system relay Water solenoid valve Violet Deck fuse... -
Page 47: Eb1 Electronic Board Connector Pins
SERVICE MANUAL ENGLISH ELECTRICAL SYSTEM EB1 ELECTRONIC BOARD CONNECTOR PINS S301581 Electronic board for Razor™ 20 Supplier Ref. Ref. Rev. Spec. 7CFBA600 Till S/N 072115094 7CFBA606 current version Electronic board for Razor™ 20T Supplier Ref. Ref. Rev. Spec. 7CFBA700 Till S/N 072014255 7CFBA706 current version CONNECTORS... - Page 48 ENGLISH SERVICE MANUAL ELECTRICAL SYSTEM EB1 ELECTRONIC BOARD CONNECTOR PINS (continues) J2: MOLEX MINIFIT type 2 ways vertical Electronic Description V ref. Connected to board in/out Solenoid valve power supply + 24V with key on “I” 0V pulsed, according to water low setting, only with paddle Solenoid valve power supply - pressed and brush function activated J3: MOLEX MINIFIT type 6 ways vertical (only version CFBA706)
- Page 50 14600 21st Avenue North Plymouth, MN, 55447-3408 www.kenteuroclean.com Phone: 800-334-1083 Fax: 866-261-4779 ©2009 Printed in Hungary...
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